Grapevine named ‘SV28-100-849’

ABSTRACT

A new and distinct variety of grapevine plant named ‘SV28-100-849’ particularly characterized by its ellipsoidal shaped, red skinned berries which are large, sweet and have very firm texture. Additionally, flower clusters and berries are very responsive to exogenous gibberellic acid application. When applied at full flowering, gibberellic acid reduces fruit set, producing loose, well-filled clusters. Gibberellic acid applied to clusters after berry set increases the berry size considerably, in some cases approximately doubling berry size over when combined with trunk girdling.

Latin name of the genus and species of the plant claimed: The plantclaimed relates to a new and distinct variety of Vitis vinifera.

Variety denomination: The plant claimed shall be known as‘SV28-100-849’.

STATEMENT OF ANY FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT

The present invention is not subject of Federally-sponsored research ordevelopment.

BACKGROUND OF THE INVENTION

The present invention comprises a new and distinct cultivar of grapevinebotanically known as Vitis vinifera and hereinafter referred to asgrapevine named ‘SV28-100-849’. As used herein, ‘grapevine’ refers toall plant parts including, vines, canes, tendrils, leaves, fruit androots of ‘SV28-100-849’. Grapevine named ‘SV28-100-849’ is the result ofan effort to produce an early ripening, red, seedless table grape withfruit characteristics superior to currently available red skinned grapecultivar ‘Flame Seedless’ (unpatented). This new cultivar originatedfrom a cross conducted in May 2007 near McFarland, Calif. betweenpistillate grapevine plant selection ‘SV18-9-1’ (unpatented) and pollenparent ‘Princess’ (unpatented). Resultant ovules from the cross wereharvested 42 days after pollination and cultured on ‘McCown's WoodyPlant Medium’ at a temperature of 22° C. for twelve weeks. Subsequently,the resultant embryonic plants were cultured in the same medium in thelaboratory under twelve hours of light from standard fluorescent lampsat 26.4° C. The seedlings from this effort were transplanted to thegreenhouse in October of 2007 and grown in the greenhouse at 26.4° C.with 12 hours' illumination under high pressure sodium vapor lamps. Theseedling population of 960 plants was planted in the field in the springof 2008 near Delano, Calif. The new grapevine was selected from thisseedling population on Jul. 13, 2010. It was then propagated by cuttingsand bench grafted to ‘Freedom’ (unpatented) rootstock in 2011. Thepresent invention has been found to retain its distinctivecharacteristics through two successive asexual propagations.

Grapevine named ‘SV28-100-849’ differs from the female parent grapevine‘SV18-9-1’ (unpatented) in that grapevine named ‘SV28-100-849’ hasellipsoidal shaped, red skinned, seedless berries and flowers withfunctional pollen, whereas the female parent grapevine ‘SV18-9-1’(unpatented) has spherical shaped, red skinned berries with partiallylignified seed traces and flowers that are pistillate.

Grapevine named ‘SV28-100-849’ differs from its male parent ‘Princess’(unpatented) in that grapevine named ‘SV28-100-849’ has red skinnedberries which keep very well for extended periods in cold storage,whereas the male parent ‘Princess’ (unpatented) has oblong shaped,yellow berries that brown internally while in cold storage.

Grapevine named ‘SV28-100-849’ differs from the commercial cultivar‘Flame Seedless’ (unpatented) in that grapevine named ‘SV28-100-849’ hasellipsoidal shaped, red skinned berries which do not require exogenousethephon application to achieve full color in the southern San JoaquinValley. Commercial cultivar ‘Flame Seedless’ (unpatented) has sphericalshaped red skinned berries which do require application of ethephon toachieve full color in the southern San Joaquin Valley. The berries ofgrapevine named ‘SV28-100-849’ have a superior eating quality and largerberries at harvest after standard vineyard practices of application ofexogenous gibberellic acid and girdling of the vine trunks as comparedto commercial cultivar ‘Flame Seedless’ (unpatented). Additionally,grapevine named ‘SV28-100-849’ has well-sealed berries tips with notendency to crack whereas commercial cultivar ‘Flame Seedless’(unpatented) has a pronounced stigmatic scar causing berry splitting insome years.

Grapevine named ‘SV28-100-849’ is most similar to Sheegene-12 (U.S.Plant Pat. No. 20,252) which ripens about the same time as the extantcultivar. Grapevine named ‘SV-100-849’ may be distinguished from‘Sheegene-12’ (U.S. Plant Pat. No. 20,252) by its greater fruitfulness,generally two clusters per shoot versus 1 cluster per shoot for‘Sheegene-12’ (U.S. Plant Pat. No. 20,252) and by its slightly darkerred fruit color.

SUMMARY OF THE INVENTION

The following are the most outstanding and distinguishingcharacteristics of the ripe fruit of this new variety when grown undernormal horticultural practices near McFarland, Calif. Some of thecharacteristics may vary depending upon changes in crop load and changeof location of cultivation.

-   -   1. Red skinned;    -   2. Very firm berry texture; and    -   3. Very large, ellipsoidal shaped berries with sweet taste.

BRIEF DESCRIPTION OF THE DRAWINGS

This new grapevine is illustrated by the accompanying photographs whichshow fruit clusters, leaves, canes, and tendrils. The colors shown areas true as can be reasonably obtained by conventional photographicprocedures. The photographs were taken in 2016 from a plant about 5years-old, grown in a field near McFarland, Calif.

FIG. 1 Natural fruit cluster and cluster sprayed with gibberellic acidwith shoots, leaves, tendrils and shoot tips.

FIG. 2 Fruit clusters on vine sprayed with gibberellic acid and trunkgirdled.

DETAILED BOTANICAL DESCRIPTION

The following detailed description sets forth the distinctivecharacteristics of ‘SV28-100-849’. Descriptions of the new inventionapply to vines of ‘SV28-100-849’ grown on ‘Freedom’ rootstock at adensity of 1,537 vines per hectare grown near McFarland, Calif. in 2017.These vines were in their sixth year of full production, having beenplanted in 2011. These descriptions are believed to apply generally tothe new variety grown under similar circumstances elsewhere. Referencesto color correspond to The Royal Horticultural Society's Colour Chart(2001), The Royal Horticultural Society, London, United Kingdom.Descriptors used herein conform to those set forth by the InternationalBoard for Plant Genetic Resources Institute Grape Descriptors (Vitisspp.) of 1983 and/or 1997 which were developed in collaboration with theOffice Interantional de la Vigne et du Vin (OIV) and the InternationalUnion for the Protection of New Varieties of Plants (UPOV) and publishedin Descriptors for Grapevine (Vitis spp.) (Anonymous, InternationalPlant Genetic Resources Institute, 1997, ISBN 92-9043-352-3).

-   Classification:    -   -   Family.—Vitaceae.        -   Botanical name.—Vitis vinifera.        -   Variety name.—‘SV28-100-849’.-   Plant:    -   -   Vigor.—Medium; vines spur-pruned and shoot thinned to 32            shoots.        -   Density of foliage.—Moderate.        -   Productivity.—Very productive when spur pruned, up to 32,000            kg/hectare.        -   Hardiness.—Hardiness observed to 0° C.        -   Rootstock.—‘Freedom’ (unpatented).-   Trunk:    -   -   Shape.—Broadly elliptical.        -   Straps.—Long, split.        -   Surface texture.—Shaggy.        -   Trunk circumference.—17.9 cm at 1.0 m of height.        -   Inner bark color.—RHS 174A Greyed orange group 167C.        -   Outer bark color.—RHS Greyed orange group 166B.-   Mature leaves:    -   -   Average blade length.—14.5 cm.        -   Average blade width.—17.5 cm.        -   Size of blade.—Large.        -   Shape.—Pentagonal.        -   Anthocyanin coloration of main veins on the upper side of            the blade.—Absent.        -   Mature leaf profile.—Cupped upwards around entire margin.        -   Blistering (upper surface).—Absent.        -   Leaf blade tip.—Curved upward.        -   Margins.—Lobed, serrated, undulating.        -   Apex.—Narrowly acute.        -   Bases.—Sagittate.        -   Thickness.—Medium.        -   Undulation of blade between main and lateral veins.—Slight.        -   Shape of teeth.—Broadly conical, both sides convex.        -   Length of teeth.—4-9 mm.        -   Ratio length/width of teeth.—About 1:1.        -   General shape of petiole sinus.—Variable; open (conical) to            closed.        -   Tooth at petiole sinus.—Absent.        -   Petiole sinus limited by veins.—Absent.        -   Shape of upper lateral sinus.—Closed.        -   Prostrate hairs between veins (lower surface).—Absent.        -   Erect hairs between veins (lower surface).—Absent.        -   Prostrate hairs on main veins (lower surface).—Absent.        -   Density of erect hairs on main veins (lower            surface).—Moderately abundant for most of the length of the            main vine. Dense at the junction of the main vein and large            veins.        -   Prostrate hairs on main veins (upper surface).—Moderately            abundant at the junction of the main vein and lateral veins.        -   Upper surface.—Summer color: RHS Green Group 137A. Surface            texture: Smooth. Surface appearance: Dull. Goffering of            blade: Absent.        -   Lower surface.—Summer color: RHS Green Group 141C.            Anthocyanin coloration of main veins on lower leaf surface:            Absent. Anthocyanin coloration on laterals: No. Glossiness:            Low. Pubescence: Absent. Surface texture: Rough. Surface            appearance: Dull.        -   Petiole.—Length: 12.7 cm. Length of petiole compared to            middle vein: Slightly shorter. Density of prostrate hairs:            Absent. Density of erect hairs: Absent. Shape of base of            petiole sinus: Mostly open; outline is ovate. Color: RHS            Green Group 143C, with red streaks, Red-Purple Group N66C.-   Tendrils:    -   -   Number.—Bifurcated and trifurcated; forming mostly at            alternate nodes above node 7.        -   Length.—28.2 cm.        -   Diameter.—4.6 mm.        -   Texture.—Smooth.        -   Color.—In shade: RHS Yellow Green Group 145A. In sun: RHS            Yellow Green Group 144B.-   Growing tips (young shoot):    -   -   Pubescence.—Abundant, prostrate.        -   Color.—RHS Yellow Green Group 144C.        -   Anthocyanins.—Absent.        -   Shape.—Flattened.        -   Apex.—Open.        -   Shoot attitude.—Semi-erect.-   Flowers:    -   -   Flower sex.—Perfect.        -   Position of first flowering nodes.—Usually on nodes 4 or 5.        -   Number of inflorescences per shoot.—Generally two per shoot            on nodes 4 and 5 or on nodes 5 and 6.        -   Flower cluster length including peduncle.—About 28 cm.        -   Peduncle color.—Yellow green group 145A with occasional red            streaking: red purple group 60A.        -   Flower cluster conformation.—Cylindrical with top shoulder            about 11.5 cm.        -   Calyptra color.—RHS 141C (green group).        -   Ovary length.—1.5 mm.        -   Ovary width.—1.0 mm.        -   Ovary color.—RHS Yellow green group 144C.        -   Filament length.—2.0 mm.        -   Filament color.—Translucent, absence of pigmentation.        -   Anther length.—1.0 mm.        -   Anther color.—RHS Yellow Group 8B.        -   Date of full bloom.—May 4th.-   Fruit:    -   -   Ripening period.—Early mid-season, about 12 days after            ‘Flame Seedless’ at Delano, Calif.        -   Date of ripening.—July 25^(th) at McFarland, Calif.        -   Use.—Fresh market.        -   Keeping quality.—Very good, fruit has stored up to 8 months            with no decay.        -   Shipping quality.—Good.        -   Date of first harvest.—July 25th.        -   Solids-sugar.—High, about 20 brix at full maturity.        -   Refractometer test.—20.0 brix.        -   Bunch.—Size: Medium. Length (peduncle excluded): About            31.4 cm. Width: About 15.0 cm. Weight: Natural, without            gibberellic acid treatment: 469.0 g. With gibberellic acid            treatment: 448.0 g. Density: Well-filled, but loose. Number            of berries: 136. Form: Conical.        -   Peduncle.—Length: About 6.7 cm. Lignification: Medium.            Color: RHS Yellow Green Group 144C.        -   Berry.—Size: Large. Uniformity of size: Uniform. Weight.            Natural, without gibberellic acid treatment: About 3.5 g.            With gibberellic acid treatment: About 4.8 g. Shape:            Natural, without gibberellic acid treatment: Ellipsoidal.            With gibberellic acid treatment: Ellipsoidal. Presence of            seeds: Seedless; most berries develop one or two small, soft            rudimentary seeds less than 1.0 mm in length. Cross section:            Circular. Dimensions: Longitudinal axis: About 2.1 cm at            base. Horizontal axis: About 1.7 cm. Skin color (without            bloom): RHS Red Purple Group 61B. Juiciness of flesh: Very            juicy. Berry firmness: Very firm. Particular flavor:            Neutral, typical vinifera. Bloom (cuticular wax): Heavy.            Pedicel length: 0.9 cm. Berry separation from pedicel:            Moderately easy.        -   Skin.—Thickness: Medium. Texture: Tender. Reticulation:            Absent. Roughness: Absent. Tenacity: Tenacious to flesh.            Tendency to crack: Resistant.-   Disease and insect resistance: Moderately susceptible to powdery    mildew which may be controlled with standard fungicides in    California.

Having thus described and illustrated my new variety of grapevine, Iclaim:
 1. A new and distinct variety of grapevine plant named‘SV28-100-849’, and parts thereof, substantially as illustrated anddescribed herein.